# Processing & p5.js iCompiler vs Vision Detector

The clearest difference is review sentiment: Vision Detector at 100% against Processing & p5.js iCompiler's 58%. Vision Detector also leads on in-app purchases (none vs 5) and update cadence (every 5 days vs every 2 months). Processing & p5.js iCompiler's advantage is iOS requirement (15.0 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. Vision Detector asks for nothing beyond the download.

Processing & p5.js iCompiler ships an update every 2 months, Vision Detector every 5 days. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | Vision Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (84 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews)** | — |
| Number of ratings | **84** | — |
| Positive reviews | 58.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 2 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Kazufumi Suzuki](https://appshunter.io/developer/1512087197) |

## What reviewers say

### Processing & p5.js iCompiler

[App page](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851)

Develop and compile Processing and p5.js code directly on your mobile device. Export your creations as standalone apps for offline use. Ideal for students and educators learning creative coding.

**Highlights:** Compose and compile code on mobile, Export projects as home screen apps, Offline app usage, Code highlighting and formatting, 3D sketches and games support, Error highlighting (Pro feature)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Processing Pro (Monthly) | $3.49 | per month |
| Processing Pro (Annual) | $9.99 | per year |
| Processing for iOS Tip | $4.99 | one-time |
| Processing Pro Lifetime Unlock | $25.99 | one-time |
| Processing for iOS Tip | $99.99 | one-time |

**What reviewers like**

- ✅ Works offline without internet connection
- 👍 Free app with no mandatory payment
- 🎨 Good for quick creative coding and sketches
- 📱 Portable Processing development on mobile
- ⚡ Relatively fast performance for mobile IDE

**What reviewers complain about**

- 🚫 Compiler errors hidden behind paywall
- 🐛 Data loss and code deletion issues
- ❌ No error messages or debugging output
- 📝 Poor syntax highlighting (highlights wrong keywords)
- ⌨️ No auto-indentation or code formatting

**Reported bugs**

- Code reverts to earlier versions after app sleep
- Changes lost when phone falls asleep
- Functions with parameters cause black screen
- StringList data type not recognized
- Boolean highlighting shows 'bool' instead of full word

**Requested features**

- Free basic error messages for all users
- Undo/redo functionality
- Project renaming capability
- Project duplication feature
- Robust auto-save and backup system


### Vision Detector

[App page](https://appshunter.io/ios/app/vision-detector/id6443729650)

Easily test and evaluate Core ML models on your iPhone or iPad. Load your own models from various cloud services or local storage and run them using live camera feed or stored images. Supports image classification, object detection, and style transfer.

**Highlights:** Run Core ML models on device, Load models from cloud storage, Live camera feed inference, Image classification support, Object detection support, Style transfer support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Processing & p5.js iCompiler free?

Processing & p5.js iCompiler is free to download, with in-app purchases available.

### Is Vision Detector free?

Vision Detector is free to download, with no in-app purchases.

### Do Processing & p5.js iCompiler or Vision Detector have ads?

Neither Processing & p5.js iCompiler nor Vision Detector shows ads.

### Which is updated more often, Processing & p5.js iCompiler or Vision Detector?

Processing & p5.js iCompiler ships an update every 2 months, and Vision Detector every 5 days. Most recently, Processing & p5.js iCompiler was updated on November 1, 2026 and Vision Detector on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*